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Finding the Fourth Proportional to 74,688.53, 103,000.94 and 54,513.46

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Solution

The fourth proportional to 74,688.53, 103,000.94 and 54,513.46 is: 75,178.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,688.53 : 103,000.94 = 54,513.46 : x
  2. Step 2: Convert to fraction form
    74,688.53/103,000.94 = 54,513.46/x
  3. Step 3: Cross multiply
    74,688.53x = 103,000.94 × 54,513.46
  4. Step 4: Simplify right side
    74,688.53x = 5,614,936,835.08
  5. Step 5: Solve for x
    x = 5,614,936,835.08/74,688.53
  6. Step 6: Final answer
    x = 75,178.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.